Make const

3rdparty/singleapplication/singlecoreapplication.h

@@ -96,37 +96,37 @@ class SingleCoreApplication : public QCoreApplication {
    * @brief Returns if the instance is the primary instance
    * @returns {bool}
    */
-  bool isPrimary();
+  bool isPrimary() const;
 
   /**
    * @brief Returns if the instance is a secondary instance
    * @returns {bool}
    */
-  bool isSecondary();
+  bool isSecondary() const;
 
   /**
    * @brief Returns a unique identifier for the current instance
    * @returns {qint32}
    */
-  quint32 instanceId();
+  quint32 instanceId() const;
 
   /**
    * @brief Returns the process ID (PID) of the primary instance
    * @returns {qint64}
    */
-  qint64 primaryPid();
+  qint64 primaryPid() const;
 
   /**
    * @brief Returns the username of the user running the primary instance
    * @returns {QString}
    */
-  QString primaryUser();
+  QString primaryUser() const;
 
   /**
    * @brief Returns the username of the current user
    * @returns {QString}
    */
-  QString currentUser();
+  QString currentUser() const;
 
   /**
    * @brief Sends a message to the primary instance. Returns true on success.